I think I have a better way for you to visualize locations of stars relative to the sun. I am also writing a science-fiction book/series so I would be glad to share ideas. I have finished one book of what I hope to one day be an eight book series. Over the course of my eight books, I am having a generation starship visit 18 star systems then return to Earth over a 600 year period. I wanted to visualize the shortest route so I actually built a 3D model out of foam balls and stiff wire. It takes about a half an hour to make this if you have the following information:
GALACTIC (CARTESIAN) COORDINATES
Create an X,Y,Z coordinate system with the following directions:
X,Y plane is the "galactic plane": this is not well defined, but ideally
there is an equal amount of mass (or star count) above and below the plane
X: line pointing in the direction of the center of the galaxy from the sun
(distance of sun "above" the plane is negligible compared to the distance
to the galactic center/ we arbitrarily choose the sun to be "above" the
galactic plane (about 67 +/- 11 Light Years according to Humphrey & Larsen
1995AJ Vol 110 p 2183)
Y: line perpendicular to X, positive in the direction of galactic rotation
Z: line perpendicular to the galactic plane that passes through the sun,
positive in the "Galactic North" direction (farther "above" the galactic
Now set the sun at (X,Y,Z) = (0,0,0).
Using these coordinates Proxima was at (2.946,-3.021,-0.169) in the year 2000 per:
Of course stars move, but if your book is near future this is close enough.
This method would just be for visualization and you would probably need to put in a few more nearby stars to get relative locations. For navigation, answers above would work (if you used a computer to calculate where Proxima will be at arrival time, you point that way and make small corrections when you get close).
Check out this cool 3D plot:
At this scale, Proxima and Alpha Centauri are in the same place.